The alternative model for personality disorder (AMPD) is currently included in Section III of the Diagnostic and Statistical Manual for Mental Disorders, Fifth Edition (DSM-5). This review sought to summarize the literature concerning the interrater reliability (IRR) of the AMPD. Despite high heterogeneity, meta-analysis provided tentative support for the IRR of Criterion A of the AMPD, with pooled intraclass correlation coefficients (ICCs) for the Level of Personality Functioning Scale (LPFS) and its domains falling above DSM acceptability levels. Subgroup analysis of the LPFS suggested IRR scores could be improved by using a specific AMPD Structured Clinical Interview (SCI). Further research should in particular consider the IRR of Criterion B elements of the AMPD and overall PD diagnosis, where insufficient data were available to draw conclusions in the present study. (PsycInfo Database Record (c) 2023 APA, all rights reserved).